GEOGRAPHY THROUGH MAPS
St. Lawrence River
The St. Lawrence flows from Lake Ontario toward its estuary and gulf in eastern Canada. Part of the upper river forms the Canada–United States boundary before the river continues through Quebec.
Fast Facts
- Ottawa River joins near Montreal; Saguenay joins the estuary farther downstream.
- Montreal and Quebec City are key river ports.
- The Great Lakes–Seaway system links inland industrial and agricultural regions with Atlantic trade.
Connected lessons
- St. Lawrence RiverMap, explanation and practice
- Great Lakes to the AtlanticGuided exploration
Geographical connections
- Gulf of St. LawrenceRelated places
- Lake SuperiorRelated places
- Lake ErieRelated places
- Lake OntarioRelated places